Photosynthesis vs. Cellular Respiration Manipulative - Basic – AK Photosynthesis Both Cellular Respiration Process only occurs in producers such as plant cells ATP provides energy for cellular functions Process occurs in all organisms Reactants (raw materials used) include CO2 Reactants (raw materials used) include O2 Reactants (raw materials used) include H2O Reactants (raw materials used) include C6H12O6 Process occurs in chloroplasts Process occurs in mitochondria New molecules include O2 Process occurs during day light or dark New molecules include C6H12O6 New molecules include H2O & CO2 Process occurs during day light ATP produced during glycolysis